Receptacle.



PATLNTLD Nov. 6, 1.906.

LLL 835,42?.

G. H. HILL.

REGEPTACLE.

APPLLOLTION FILED PLB.11.1905.

INVENTOI Cnarle H., H i l l,

CHARLES HQ HILL, OF SCHENECTADY, YORK, ASSIGNOR T GEN- PATENT orrion.

. ERAL 'ELECTRIC COMPANY, A CoRPORATIoN OF NEW YORK.

' nsor-:Pr'AoLx-z.

To aZZ whom, t may concern,.- lBe it known that l, CHARLES H. HILL, a

` citizen of the United States, residing at Schenectad county of Schenectady, State ofNew Yor have invented certain new and useful improvements in Receptacles, of which the following is a specificatlon.

This invention relates to receptacles for incandescent lamps, with special reference to vreceptacles'- used for lamps for signaling purposes. f. My improved receptacle is particularly yadapted for lamps used on the switchboards of central stations to indicate the .condition of circuits and especially to indicate the condition of large electrically operated oilswitches, which are commonly located at a distance from the switchboard, only the Wires of the control-circuitbeing carriedto the board. It has become the common practice in such cases to provide a small doublethrow switch on the switchboard. to close in either directionor open the control-circuit for o erating the large oil-switch and two signa -lamps, one showin a green and one `a red light, which are cut mto and out ofcircuit automatically to indicate that the large switch is open or closed. These indicatinglamps are usually mounted on'the back of the 30 panel of the switchboard, and the light shows through openings therein covered with suitably-.colored lenses. For supporting these lamps it is desirable to have a receptacle which permits of the removal of the lamp for purposes of inspection or renewal from the back of the switchboard without interfering in any way with the electrical connections or risking a short-circuit on the'control-circuit. My improved receptacle is designed particularl to fulfill these conditions; zbut 1 wish it understood that the features of my invention may be em loyed in sockets .and receptacles v,for'widely ifferen't uses.-

The construction of my .improved receptacle will be better understood by reference .to vthe followin description, taken in contherewith.

nection with t e accompanying drawings,

f which show vthe preferred embodiment .of my invention, and in Which- L Figure 1 is an elevation of thereceptacle, Fig. 2 is a section of the same.

ar view of the plug which coperates Specification of Letters Patent. Application filed February 11, 1905. Serial No. 245,204.

3 is af perspective view of the holder, land Fig. 4 is al Patented Nov. 6, 19Q6.

The features of novelty which l believe to Aloe characteristicy of my invention will be definitely indicated in the claims appended hereto.

Referring to the drawings, l indicates a panel of a switchboard, having an openingy therethrough into which the end of the signal-lamp 2 extends. At the front of vthe .and a plug 5 ,which fits into the holder. These two parts are of molded insulating material, having the necessary metallic arts held therein in proper relation. Mol ed in the holder 4 are three metallic rings v6, 7, and 8. The ring 6 has two integral extensions 9, which are bent, as shown in Figs. 1 and 3, to form feet for supporting the receptacle, and three pro'ecting ears l0. The ring 7 is provided wit an integral projection 11, which is bent, as shown in Fig. 2, and secured to an outwardly-extending bolt 12, on which arenuts and washers 13 for securin a wire to the bolt, and thus making electrica connection to one terminal ofthe receptacle. The rings 6 and 7 are insulated from each .other by a mica board the openin is closedby a suitablywasher 14, and the projectin ears 10 on the ring 6 and similar ears on t e nuca washer projection 11 on the ring 7, to which a bolt 16 1s secured. This bolt 1s also provided With -nuts and Washers for securingba wire thereto .by which electrical connection "is made to the Extendin through the holder 4-is a bore, longitudina l other terminal of the receptacle.

sections of which are. threaded, as shown in Fig. 3. This thread 1s not a contlnuous one throughout all the sections; but insteadeachni...

section of threads is a duplicate f all the other sections.v The .opening in the rin 8 is the same size as the bore throu h the ho der; but the opening in rings 6 an 7 1s. smaller than the bore and just large enough to permit of introducing the lamp 2 through it.

materi 0 A ,held in its end to receive the threaded base of the signal-lamp 2. On the outer end of this shell is a flange l1,72, which covers the entire The: 111g 5.is also of molded insulatingl all) and has a screw-threaded-shell 17.

end of the holder 4. Molded within the plug 5 is a washer 18, of spring metal, the inner edge of which is soldered to a metallic connectingiece 19.` The middle portion of this piece orms the back of a long bore extending almost through the plug 5. Y The end of the plug is lmurled, as shown-in Fig. 1, and a ange is formed in the plug to prevent accidental contact with the washer 18.

The receptacle lis secured to the back of the panel by screws extending through openings in the feet. 9. For this purpose I refer to use expansion-bolts 21, as shown in ig. 1, in order that openings need not be made entirely through the panel. The circuit-wires of the lamp are attached lto the bolts 12 and `16 by means of the nuts thereon. A small inclosed use 22, such as that shown in Fig. 2,

is dropped-in the bore of the'plug 5, and the base of the lam 2 is screwed into the shellcontact 17 unti the center contact on the base of the lamp engages -the end of the fuse 22. The end ot the lamp 2 is inserted through the bore inthe holder 4, and the plug 5 is then vturned until the threaded sec-14 tions thereon are op vosite'the smooth 'sections of the bore o the holder. As lthe several sections of threads are duplicates of each other, there are several positions in which the vplug will t yinto theholder, and therefore only a partial turn ol the' lug is necessary-to ring the parts to this re ation. The plugfis then pushed into `the bore until the spring-washer 18 touches the ring 8 and is then; turned until' the coperatingthreads on the plug-and' the bore of the'holder draw the'plug into the holder so far that further movement 'iS prevented by the shell 17 engaging thering 7 and the spring-washer 18 engaging the ring 8. The circuit of the lamp throughthe receptacle is then completed, itbeing from the bolt 16 through the projectio'n15 to ring 8, then to washer 18, connect- '5 f shellicentact to shell 17, flange 1-7, ring 7 ing-member 19, fuse 22, tothe center contact of the lamp, then through the lamp to the v'Lawn and pro'ection 1'1'to bolty 12.

with a new one it is on y necessaryto give the plug 5 a partial turn and pulleitfand the 1am carried thereby through the bore inthe hol' ere;l also, that this is done Without-dis-A turbing-tany ofthe electrical connections. When a new lamp has been inserted inthe shell 17 of plug 5, thelamp and plug may hev i he seen that if it isldesired to remove the lamp in order to in s ect it or replace it seater properrelation greatly reduces the cost of production.

The construction which I have shown and described herein may be changed in .many details without de arting from the spirit of my invention, an all such modifications I consider within the scope of my invention, and I aim to cover them inthe claims appended hereto.

What I claim as new, and desire to secure by Letters Patent of the United States, is 1. The combination with a panel having an o ening therethrough, of anelectric-lamp hol er secured to said panel and having an opening in line with said panel-opening,- a P ug having a lamp secured in electrical contact therewith adapted to fit into said holder, saidl lamp adapted to pass thro h said holder and into said panel-opening, an coperatingl contacts in said plug and holder.

2. The combination with a panel having an opening therethrough, of van electric-lamp i holder securedv to one side of said panel and having an opening in line with said panelopening, a plug having a lamp secured in elec-- 'trical contact therewith adapted to fit into said holder, said lamp passing through said holder and into said panel-openin ,coperating contacts in said plug and ho der, and a transparentl covering for the opposite side ofsaid panel-opening.

3. The combination a panel having an opening therethrough, of an electric-lamp holder ,secured to one side of said panel but' out of contact therewith and-havingan opening in line with said anel-openin a `plug having a lampsecure in electrica contact v IOO therewith adapted tot into said holder, said lam passing through said holder-and .in-tofpanel-opening, andI cooperating con-- sai tacts in said plug andholder.`

' 4. The ycombination-with. panel an vopening therethrough,o an electric-lamp holder securedfto one-side of said panel-butE out of contact therewith and havi'nganopening inline with said anel-op a'plug; having al lamp secured in electrical Contact` therewith adapted to fit inte `said -l'ioldsrf said lamrpassing--throughf said holder and panel-opening, vcopei'ating con-- older, and a ytrans-- parent covering for the opposite sid'efof' said intoI sai tacts in said plug and panel-opening;

5.' A receptacle for an electric lati'ipcoin-` prising an annular holder, a plug lprovided with vmeans whereby it may be secured-within said holder and'in electrical'. contact there-` with, and alamp secured in-electri'cal cen-fytact withl the-inner Iend of 'said "plug: and

ada tedto be withdrawn therewthzfrom the hol er.-

6i A receptacle for an electric lampl comprising an annular-holder having contact-- plates at opposite sides thereof, aplpgpro -1 non vided with correspondinglv-arrana IIO tacts, a lam Screwed into electrical contact with one en of said plug, an electrical conductor between one of said contact-plates and the interior of the plug at its opposite end, and a fuse secured in lace between said lam and slaid conductor y the pressure of the amp.

7. A receptacle for an electric lamp comprising an annular holder having contactplates at opposite sides thereof, a plug havlng correspondingly-arranged contacts and provided with means whereby it may be secured within said holder, a lamp Screwed into electrical contact with one end of said plug and adapted to be Withdrawn therewith from the holder, an electrical conductor between one of said contact-plates and the interior of the plug at its opposite end, and a fuse secured in place between said lamp and said conductor by the pressure of the lamp.

In witness Whereo'r` I have hereunto set my hand this 9th day of Februar 1905.

CHARL S H. HILL. Witnesses:

BENJAMIN B. HULL,

HELEN OBFORD. 

